<template>
  <div>
      <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
        <!-- 搜索与添加区 -->
        <el-row :gutter="20">
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear='getUserList'>
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
        </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>

        <!-- 用户列表区域 -->
        <el-table :data='userlist' border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column label="姓名" prop="username"></el-table-column>
            <el-table-column label="邮箱" prop="email"></el-table-column>
            <el-table-column label="电话" prop="mobile"></el-table-column>
            <el-table-column label="角色" prop="role_name"></el-table-column>
            <el-table-column label="状态">
                <template v-slot='scope'>
                    <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作">
                <template v-slot='scope' width='180px'>
                    <!-- 修改按钮 -->
                    <el-button type="primary" icon="el-icon-edit" size='mini' @click="showEditDialog(scope.row.id)"></el-button>
                    <!-- 删除按钮 -->
                    <el-button type="danger" icon="el-icon-delete" size='mini' @click='removeUserById(scope.row.id)'></el-button>
                    <!-- 分配角色按钮 -->
                    <el-tooltip effect="dark" content="分配角色" placement="top" :enterable='false'>
                        <el-button type="warning" icon="el-icon-setting" size='mini' @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table>

        <!-- 分页区域 -->
        <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1,2,5,10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
        </el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog
    title="添加用户"
    :visible.sync="addDialogVisible"
    width="50%" @close='addDialogClosed'>
    
    <!-- 内容主体区 -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
    </el-form>
    <!-- 底部区 -->
    <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
    </span>
    </el-dialog>
    <!-- 修用户的对话框 -->
    <el-dialog
    title="修改用户"
    :visible.sync="editdialogVisible"
    width="30%" @close="editDialogClosed">
        <el-form :rules="editFormRules" :model="editForm" label-width="70px" ref="editFormRef">
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop='email'>
                <el-input v-model="editForm.email" ></el-input>
            </el-form-item>
            <el-form-item label="手机" prop='mobile'>
                <el-input v-model="editForm.mobile" ></el-input>
            </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
        <el-button @click="editdialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
    </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
    title="分配角色"
    :visible.sync="setRoledialogVisible"
    width="50%" @close="setRoledialogClosed">
    <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
            <el-select v-model="selectedRoleId" placeholder="请选择">
                <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
                </el-option>
            </el-select>
        </p>
    </div>
    <span slot="footer" class="dialog-footer">
        <el-button @click="setRoledialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
    data(){
        // 验证邮箱
        var checkEmail = (rule,value,cb) =>{
            // 验证邮箱的正则表达式
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if(regEmail.test(value)){
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }
        // 验证手机号的正则表达式
        var checkMobile=(rule,value,cb) =>{
            // 验证手机号的正则表达式
            const regMobile=/^(0|86|17951)?(13[0-9]|15[012356789]|166|17[3678]|18[0-9]|14[57])[0-9]{8}$/
            if(regMobile.test(value)) {
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return{
            // 获取用户列表的参数对象
            queryInfo:{
                query:'',
                // 当前的页数
                pagenum:1,
                // 当前每页显示多少条数据
                pagesize:2
            },
            userlist:[],
            total:0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            // 添加用户的表单梳理
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            // 添加表单的验证规则对象
            addFormRules:{
                username:[
                    {required:true,message:'请输入用户名',trigger:'blur'},
                    {min:3,max:10,message:'用户名的长度在3-10个字符之间',trigger:'blur'}
                ],
                password:[
                    {required:true,message:'请输入密码',trigger:'blur'},
                    {min:6,max:15,message:'用户名的长度在6-15个字符之间',trigger:'blur'}
                ],
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},{validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入手机号',trigger:'blur'},{validator:checkMobile,trigger:'blur'}
                ],
            },
            // 控制修改用户对话框的显示与隐藏
            editdialogVisible:false,
            // 查询到的用户信息对象
            editForm:{},
            // 修改表单的验证规则对象
            editFormRules:{
                email:[
                    {required:true,message:'请输入邮箱',trigger:'blur'},{validator:checkEmail,trigger:'blur'}
                ],
                mobile:[
                    {required:true,message:'请输入用户手机',trigger:'blur'},{validator:checkMobile,trigger:'blur'}
                ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoledialogVisible:false,
            // 需要被分配角色的用户信息
            userInfo:{},
            // 所有角色的数据列表
            rolesList:[],
            // 已选中的id值
            selectedRoleId:'',
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res} =await this.$http.get('users',{params:this.queryInfo})
        if(res.meta.status !== 200) return this.$message.error('获取用户列表失败!')
        this.userlist = res.data.users
        this.total = res.data.total
        },
        // 监听pagesize改变的事件
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
             this.getUserList()
        },
        // 监听switch开关的状态
        async userStateChanged(userinfo){
            const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
            if(res.meta.status !==200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败！')
            }
            this.$message.success('更新用户状态成功！')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed(){
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮添加新用户
       addUser(){
           this.$refs.addFormRef.validate(async valid=>{
               if(!valid) return 
            //    可以发起添加用户的请求
            const {data:res} = await this.$http.post('users',this.addForm)
            if(res.meta.status !== 201){
                this.$message.error('添加用户失败！')
            }
            this.$message.success('添加用户成功！')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
           })
       },
        //  展示用户编辑对话框 
       async showEditDialog(id){
           const {data:res} = await this.$http.get('users/'+ id)
           
           if(res.meta.status !==200){
               return this.$message.error('查询用户信息失败！')
           }
           this.editForm = res.data
           this.editdialogVisible = true
       },
        //监听修改用户对话框的关闭事件
       editDialogClosed(){
           this.$refs.editFormRef.resetFields()
       },
        // 修改用户信息并提交
        editUserInfo(){
            this.$refs.editFormRef.validate(async valid=>{
                if(!valid) return
                // 发起用户修改信息的数据请求
                const {data:res} = await this.$http.put('users/'+ this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})
                if(res.meta.status !== 200){
                    return this.$message.error('更新用户信息失败！')
                }
                // 关闭对话框
                this.editdialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示修改成功
                this.$message.success('更新用户信息成功！')
            })
        },
        // 根据id删除对应的用户信息
        async removeUserById(id){
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err=> err)
            // 如果用户确认删除，则返回值为字符串 confirm
            // 如果用户取消了删除，则返回值为字符串 cancel
            if(confirmResult !== 'confirm'){
                return this.$message.info('已经取消删除')
            }
            const {data:res} = await this.$http.delete('users/' + id)
            if(res.meta.status !== 200){
                return this.$message.error("删除用户失败")
            }
            this.$message.success('删除用户成功！')
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo){
            this.userInfo = userInfo
            // 在展示对话框前获取所有角色的列表
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                return this.$message.error("删除用户失败")
            }
            this.rolesList = res.data
            this.setRoledialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo(){
            if(!this.selectedRoleId){
                return this.$message.error('请选择要分配的角色！')
            }
            const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{
                rid: this.selectedRoleId
            })
            if(res.meta.status !== 200){
                return this.$message.error("更新角色失败!")
            }
            this.$message.success("更新角色成功!")
            this.getUserList()
            this.setRoledialogVisible = false
        },
        // 监听角色对话框的关闭事件
        setRoledialogClosed(){
            this.selectedRoleId = ''
            this.userInfo = {}
        }
    }

}
</script>

<style lang='less' scoped>

</style>